Weekly FOSS Release Digest — September 2026, Week 1

Notable FOSS Releases This Week

Our RSS monitoring picked up a fresh batch of releases and milestones across the open-source ecosystem this week. From a long-awaited point release of a fast Lisp-family language to a brand-new GUI for the Haskell toolchain manager, here’s what caught our attention.

1. Janet 1.42.0 — Bug Fixes, Documentation Revamp, and Shell Completions

Janet, the lightweight Lisp-family programming language, has shipped version 1.42.0. The maintainers describe it as “a long-coming release” packed with bug fixes and documentation improvements.

The headline additions include shell completions for bash, zsh, and fish, so your favourite Janet scripts get tab-completion in your terminal. The release also adds new int8_t, uint8_t, and float getters for working with typed data, continued maintenance of the Plan 9 port, and several new OSS-Fuzz fuzzing targets (including unmarshal and compile) to harden the runtime against malformed input.

Under the hood there are meaningful correctness fixes — including GC fixes for active fibers during nested janet_continue calls, stale fiber stack pointers across realloc, a double-free bugfix in the event loop, and better handling of realpath allocation.

A large portion of this release is a documentation overhaul, led by contributor @sogaiu, improving docstrings across scores of functions (filter, map, reduce, loop, and many more) for clearer, more consistent API reference. It’s a quality-of-life release that makes Janet more approachable for newcomers.

Learn more about Janet at janet-lang.org.

2. ghcup-gtk v0.1.0.0 — A GTK Frontend for the Haskell Toolchain Manager

ghcup-gtk hit its first release with v0.1.0.0 — a graphical wrapper around GHCup, the Haskell toolchain manager. It’s designed to appeal to newcomers to the language, letting you install and manage GHC, cabal, and Stack versions from a friendly desktop interface instead of the command line.

Beyond being a useful utility, the project is also pitched as a learning codebase for building GTK applications in Haskell — the author notes it’s their first GTK app. Signed packages for various operating systems ship with this initial release.

If you’re getting started with Haskell or just prefer a GUI for toolchain management, this is one to watch. The project lives on GitHub at Kleidukos/ghcup-gtk.

3. ReactOS 0.4.16 — Milestone Release After 30 Years

ReactOS, the free and open-source reimplementation of Windows built to be binary-compatible, tagged version 0.4.16 — arriving alongside a significant milestone: 30 years since the project’s first commit.

ReactOS aims to let you run Windows applications and drivers natively on a platform built from scratch under a permissive license. The 0.4.16 release continues the project’s steady march toward broader hardware and software compatibility, resolving 381 issues across 2,808 commits.

The headline change is a brand-new graphical installer, which also unifies the previously separate live CD and boot CD into a single image — you can now test and install ReactOS from the same download. Under the hood, a new ATA driver lets it boot in far more environments, including inside Hyper-V Generation 1, while networking gained asynchronous connection support for better performance and application compatibility.

0.4.16 also adds a new Server Core installation type that disables the graphical explorer shell while loading the full Win32 subsystem, positioning ReactOS for server and embedded workloads. And for the first time, release images include WineVDM for 16-bit Windows application compatibility, alongside an ongoing sync of the project’s Wine fork toward Wine 10.0.

You can grab the release and explore the project at reactos.org.

4. Gram Editor 3.3.0 — Zed Fork Polishes Git Workflows

Gram, the opinionated open-source fork of the Zed code editor that strips out AI features, telemetry, and collaboration, has released version 3.3.0 with a focus on Git tooling.

New in this release:

• Toggle actions for all side panels — quick show/hide controls for each panel.
• Git diff statistics — added and deleted line counts now show per entry and in total in the git panel (behind the git_panel.diff_stats setting).
• Branch picker filters — filter branches by all, local, or remote.
• git::ToggleFillCommitEditor — expand the commit editor to fill the git panel, bound to alt-shift-escape.

If you value a modern editor without built-in AI or telemetry, Gram is worth a look. See the site at gram-editor.com or the source on Codeberg.

Stay Up to Date

These are just the highlights from this week’s RSS scans. We monitor releases across dozens of open-source projects to keep our directory — and you — informed about the latest developments in the FOSS ecosystem.

Browse the full directory for free and open-source tools across 30+ categories, or check out our blog for more deep dives, comparisons, and guides.

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